A/ X + 7 = 4 B/ 2X – 35 = 15 X = 4 – 7 2X = 15 + 35 X = - 3 2X = 50 X = 50

Question

Bài 2 :( 2đ ): Tỡm x , biết:a/ x + 7 = 4 b/ 2x – 35 = 15 x = 4 – 7 2x = 15 + 35 x = - 3 2x = 50 x = 50 : 2  x = 25

Answer

Bài 2 :( 2đ ): Tỡm x , biết:a/ x + 7 = 4 b/ 2x – 35 = 15 x = 4 – 7 2x = 15 + 35 x = - 3 2x = 50 x = 50 : 2  x = 25